Aerobic respiration needs oxygen, and it produces carbon dioxide as a waste product. The human respiratory system contains the organs that allow us to get the oxygen we need and to remove the ...
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the human gas exchange system, and breathing. If you struggled with the quiz, don't panic - we've got you! You can revise by clicking the links below.
Human activities, such as making fertilizers ... Denitrification is the process that converts nitrate to nitrogen gas, thus removing bioavailable nitrogen and returning it to the atmosphere.
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